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Finding the Fourth Proportional to 168,626.56, 252,907.34 and 78,644.44

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Solution

The fourth proportional to 168,626.56, 252,907.34 and 78,644.44 is: 117,951.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,626.56 : 252,907.34 = 78,644.44 : x
  2. Step 2: Convert to fraction form
    168,626.56/252,907.34 = 78,644.44/x
  3. Step 3: Cross multiply
    168,626.56x = 252,907.34 × 78,644.44
  4. Step 4: Simplify right side
    168,626.56x = 19,889,756,126.19
  5. Step 5: Solve for x
    x = 19,889,756,126.19/168,626.56
  6. Step 6: Final answer
    x = 117,951.50

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.